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Gear Discussion Forums => Fender Basses => Topic started by: ilan on August 13, 2025, 03:41:09 AM

Title: Series/parallel switch on a Jazz Bass
Post by: ilan on August 13, 2025, 03:41:09 AM
I've just installed this (https://www.ebay.com/itm/284540766531) on my 75/77 and it's awesome. It's that mini switch between the tone knob and the jack (some prefer push/pull tone).

I've always used the neck pickup only on J's, hated that J+J tone. Now with the switch on series it's a great useable sound. Both full on, fat tone, significant boost, and as a bonus, in series the neck volume turns into a master volume.

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Title: Re: Series/parallel switch on a Jazz Bass
Post by: gearHed289 on August 13, 2025, 07:51:39 AM
Nice setup. I wouldn't mind trying that if I still had a Jazz Bass.
Title: Re: Series/parallel switch on a Jazz Bass
Post by: Rob on August 13, 2025, 07:57:29 AM
What a great idea!
Title: Re: Series/parallel switch on a Jazz Bass
Post by: ilan on August 13, 2025, 08:12:41 AM
If I understand it correctly, series mode wires the two single coils as one humbucker, which explains the volume boost and fatter tone.
Title: Re: Series/parallel switch on a Jazz Bass
Post by: amptech on August 14, 2025, 03:47:29 AM
Series wired singlecoils are serieusly underrated!
Title: Re: Series/parallel switch on a Jazz Bass
Post by: ilan on August 14, 2025, 09:29:34 AM
Should I try it on a Ric?
Title: Re: Series/parallel switch on a Jazz Bass
Post by: exiledarchangel on August 15, 2025, 06:50:26 AM
That would be interesting, I don't know anyone done that. Ric pickup pairs are rw/rp, right?
Title: Re: Series/parallel switch on a Jazz Bass
Post by: Rob on August 15, 2025, 09:54:09 AM
Quote from: exiledarchangel on August 15, 2025, 06:50:26 AMThat would be interesting, I don't know anyone done that. Ric pickup pairs are rw/rp, right?
If you just use jumper cables to test it won't be a tough mod.
Title: Re: Series/parallel switch on a Jazz Bass
Post by: exiledarchangel on August 15, 2025, 10:03:35 AM
No, it is not, but if the pickups are not rw/rp then in series mode instead of no noise you will have double noise.
Title: Re: Series/parallel switch on a Jazz Bass
Post by: Rob on August 15, 2025, 02:32:09 PM
Quote from: exiledarchangel on August 15, 2025, 10:03:35 AMNo, it is not, but if the pickups are not rw/rp then in series mode instead of no noise you will have double noise.
Gotcha!
Title: Re: Series/parallel switch on a Jazz Bass
Post by: Alanko on August 15, 2025, 03:42:19 PM
It could be rewired so that both volumes set the pickups in series. I think the Bicentennial T-birds were wired like this?
Title: Re: Series/parallel switch on a Jazz Bass
Post by: doombass on August 19, 2025, 01:29:49 AM
Quote from: Alanko on August 15, 2025, 03:42:19 PMIt could be rewired so that both volumes set the pickups in series. I think the Bicentennial T-birds were wired like this?

Correct.